That statement is historically inaccurate. Before 1947, India was not known as the "Bangla Sultanate." India was a diverse region with various princely states, territories, and empires. In 1947, British India gained independence and was divided into two separate nations, India and Pakistan. The term "Bangla Sultanate" refers to a historical state centered around Bengal during the medieval period, but it doesn't accurately represent the entirety of the Indian subcontinent before 1947.